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By 2020, China's planned non-fossil energy will account for 15% of total energy consumption. Renewable energy sources such as wind and solar energy will be widely used, and the development of renewable energy is unstoppable. The biggest feature of renewable energy is intermittent, discontinuous and unstable, which brings a lot of headaches to the grid. The grid is a balanced power source and load. For both ends of the grid, which are random and uncontrollable, a technology must be developed to solve this problem. This technology is another hot topic brought about by the infinite infinite "scenery" in recent years--battery energy storage.
As a commodity, electricity has always had a shortcoming, that is, storage. The system facing the power is immediate release. The reason for the stable and safe operation of the system is that the power supply can be trusted, controllable, and the load is random. Some technical means can be used to balance the load. However, after the renewable energy is connected to the power grid, this way has undergone a fundamental change. It is no longer based on demand to generate electricity, but to generate electricity based on resources.
Udo Niehage, CEO of the Power Transmission and Distribution Group of Siemens Energy Business Group, once said that the future development trend of the power grid is "the traditional 'power consumption to determine the amount of power generation', and the shift to 'power consumption will depend on power generation'." This trend will become more apparent as the use of renewable energy increases.
The essence of energy storage is to achieve storage of electrical energy and release it when needed. The emergence of this technology has completely changed the mode in which the production, transportation and use of power systems must be carried out simultaneously. Universal application of renewable energy to the grid, energy storage is an essential part. For all aspects of power system transmission and distribution, energy storage technology is needed. Renewable energy is connected to the power grid, and it is not just relying on energy storage to solve all problems. This is actually a huge system that needs to be comprehensively solved. The internationally visible way is to use demand-side management, such as electric vehicles, cogeneration, energy-saving facilities and other comprehensive applications to solve the post-renewable energy era.
These measures are all in the research and development stage, and their effectiveness is still unclear. In fact, energy storage is recognized as a more effective means. It can be regarded as one of the roles of accepting renewable energy. From the perspective of scientific research, the sudden emergence of energy storage technology in recent years has given the industry a glimmer of hope.
From the planning of China's wind and solar power generation, the installed capacity of wind power in 2015 reached 150 GW. At the same time, we also saw that according to the “Regulation Report on Wind Power and Photovoltaic Power Generation†of the SERC, as of the first half of 2010, China’s abandonment of wind due to the inability to access the Internet has reached 2.776 billion kWh. The phenomenon of abandoning the wind is also serious. How to effectively use renewable energy to generate electricity has become the focus of the market.
The large-scale and high-efficiency energy storage technology is the most effective core technology for realizing the popularization and application of renewable energy such as wind energy and solar energy. It is the key technology to improve the peak shaving capacity of the power grid and the compatibility of renewable energy grids and build a strong smart grid.
The development of energy storage technology is actually exploring new ways of developing power systems. The director of the Superconductivity Research Institute of China Electric Power Research Institute came to Xiaokang at the 2011 Energy Storage System Industry Development Forum. “The trend of peak load capacity growth is so continuous, and the current resources can no longer support our development. The practical significance of the peak-filling valley is that the transformation mode of the power grid has changed. The energy-saving technology transforms the power grid from power transmission to power transmission.
Energy storage technology is a complex and multi-disciplinary, and is a strategic cutting-edge technology that is constantly being updated. We are now looking at energy storage technology is not a mature technology, there is still a long way to go from large-scale commercial operation, but it is definitely a technology with strong development potential. â€
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